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SE9700304L - Grinding elements for disc refiners with booms and intermediate tracks and channels for free passage of steam - Google Patents

Grinding elements for disc refiners with booms and intermediate tracks and channels for free passage of steam

Info

Publication number
SE9700304L
SE9700304L SE9700304A SE9700304A SE9700304L SE 9700304 L SE9700304 L SE 9700304L SE 9700304 A SE9700304 A SE 9700304A SE 9700304 A SE9700304 A SE 9700304A SE 9700304 L SE9700304 L SE 9700304L
Authority
SE
Sweden
Prior art keywords
bars
channels
steam
free passage
booms
Prior art date
Application number
SE9700304A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE508286C2 (en
SE9700304D0 (en
Inventor
Nils Virving
Original Assignee
Sunds Defibrator Ind Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Priority to SE9700304A priority Critical patent/SE508286C2/en
Publication of SE9700304D0 publication Critical patent/SE9700304D0/en
Priority to PCT/SE1998/000109 priority patent/WO1998033594A1/en
Priority to AU58886/98A priority patent/AU5888698A/en
Publication of SE9700304L publication Critical patent/SE9700304L/en
Publication of SE508286C2 publication Critical patent/SE508286C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/12—Shape or construction of discs
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D21D1/306—Discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
  • Crushing And Grinding (AREA)

Abstract

A refining element for disintegrating and refining fiber material in a disc refiner. The refining element is formed with a base surface (1, 11), on which a pattern of bars (2, 12) is arranged. The bars (2, 12) extend over the surface of the refining element and are separated by intermediate grooves (6, 13), and flow restrictions (14) can be located in the grooves (6, 13) between the bars (2, 12). Channels (7, 15) are arranged at the same level as the base surface (1, 11) of the refining element for a free passage of steam outward and inward without obstruction by bars (2, 12) of the refining element, or fiber material in the grooves (6, 13) or flow restrictions (14) in the grooves (6, 13). The upper edges of the bars can thereby remain unbroken.
SE9700304A 1997-01-31 1997-01-31 Grinding elements for disc refiners with booms and intermediate tracks and channels for free passage of steam SE508286C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9700304A SE508286C2 (en) 1997-01-31 1997-01-31 Grinding elements for disc refiners with booms and intermediate tracks and channels for free passage of steam
PCT/SE1998/000109 WO1998033594A1 (en) 1997-01-31 1998-01-27 Refining element
AU58886/98A AU5888698A (en) 1997-01-31 1998-01-27 Refining element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9700304A SE508286C2 (en) 1997-01-31 1997-01-31 Grinding elements for disc refiners with booms and intermediate tracks and channels for free passage of steam

Publications (3)

Publication Number Publication Date
SE9700304D0 SE9700304D0 (en) 1997-01-31
SE9700304L true SE9700304L (en) 1998-08-01
SE508286C2 SE508286C2 (en) 1998-09-21

Family

ID=20405593

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9700304A SE508286C2 (en) 1997-01-31 1997-01-31 Grinding elements for disc refiners with booms and intermediate tracks and channels for free passage of steam

Country Status (3)

Country Link
AU (1) AU5888698A (en)
SE (1) SE508286C2 (en)
WO (1) WO1998033594A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8028945B2 (en) * 2007-05-31 2011-10-04 Andritz Inc. Refiner plates having steam channels and method for extracting backflow steam from a disk refiner
SE541111C2 (en) * 2017-06-19 2019-04-09 Valmet Oy Steam evacuation in a pulp or fiber refiner
SE540890C2 (en) 2017-09-01 2018-12-11 Valmet Oy Refiner segment in a fiber refiner
AU2018385685B2 (en) * 2017-12-15 2020-02-20 Andritz Inc. Water relief groove to prevent cavitation of opposite refiner plate
MX2021004060A (en) * 2018-10-11 2021-06-23 Andritz Inc Refiner plate having inter-bar wear protrusions.
SE545094C2 (en) * 2021-03-24 2023-03-28 Valmet Oy Refiner segment
SE2330254A1 (en) * 2023-06-02 2024-12-03 Valmet Oy Blade, refiner comprising a blade, and method for manufacturing a blade

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI53469C (en) * 1976-07-02 1978-05-10 Enso Gutzeit Oy MALSKIVA
FI73256C (en) * 1984-10-19 1987-09-10 Yhtyneet Paperitehtaat Oy Target segments.
SE456223B (en) * 1987-02-25 1988-09-19 Sunds Defibrator DISC REFINOR PAINTING ELEMENT

Also Published As

Publication number Publication date
AU5888698A (en) 1998-08-25
SE508286C2 (en) 1998-09-21
SE9700304D0 (en) 1997-01-31
WO1998033594A1 (en) 1998-08-06

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Legal Events

Date Code Title Description
NUG Patent has lapsed